Machinery or apparatus for skiving leather, leather-board, &amp;c.



PATENTED MAR. '7, 1905.

C. H. KEATS.

' MACHINERY OR APPARATUS FOR SKIVING LEATHER, LEATHER BOARD, &0.

APPLICATION FILED AUG. 24, 1903.

No. 784,165. PATENTED MAR. 7, 1905. G. H. KEATS.

MACHINERY OR APPARATUS FOR SKIV ING LEATHER, LEATHER BOARD, 6w. APPLICATION FILED AUG. 24. 1903.

a sums-sum 2.

2; mmm

No. 784,165. PATENTED MAR. '7, 1905' G. H. KEATS.

MACHINERY 0R APPARATUS FOR SKIVING LEATHER, LEATHER BOARD, 83o.

' APPLIOATION FILED AUG. 24. 1003.

a SHEETS-SHEET a.

No. 784,165. PATENTED MAR. 7, 1905. G. H. KEATS.

MACHINERY OR APPARATUS FOR SKIVING LEATHER, LEATHER BOARD, Aw.

APPLIGATION FILED AUG. 24. 1903.

5 SHEBTSSHEET 4.

PATENTED MAR. '7, 1905.

C. H. KEATS.

MACHINERY OR APPARATUS FOR SKIVING LEATHER, LEATHER BOARD, 8m.

APPLIGATION I'ILED AUG. 24. 1903.

b SHBETS-SHBET 5.

Patented March '7, 1905.

ATENT tries.

CHARLES HORATIO KEATS, OF NOR'lI'IAD/IP'JON, ENGLAND.

MACHINERY OR APPARATUS FOR SKIVING LEATHER, LEATHER-BOARD, 8L0.

SPECIFICATION forming part of Letters Patent No. 784,165, dated March '7, 1905.

Application filed August 24, 1903. Serial No. 170,656.

To a where it many concern,-

Be it known that 1, CHARLES Hona'rro KEATS, a subject of the King of Great Britain and lreland, residing at Brunswick Place, Northampton, in the county of Northampton, England, have invented new and useful improvements in or Relating to Machinery or Apparatus for Skiving Leather, Leather-Boards, Paper, Cardboard, and the Like, of which the following is a specification.

This invention relates to machinery or apparatus employed for skiving leather --snch as, for example, say, stitfeners, counters, split lifts, upper-leather, and leather-board stiffeners, all of which are used in the manufacture of boots and shoes; but it may also be used for skiving pieces of leather used for other purposes, as well as for skiving strawboard, cardboard, and paper.

All the above materials are hereinafter termed and included in the term material.

The object of these improvements are, first,

to construct a machine in which an endless traveling band-knife is adapted to the said purposes and adjusted to any required angle; secnd, to afford facilities for automatically sharpening the cutting'edge of the band-knife as occasion requires, and, third, to provide mechanism for automatically feeding the material operated upon to the said cutting edge of the knife. These objects are obtained by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side elevation with a portion of the driving mechanism removed; Fig. 2, a sectional elevation on line i .1, Fig. 1; Fig. 3, a plan looking atv the top; Fig. 4, a part sectional elevation of mechanism employed for driving the machine; Fig. 5, an end elevation of same; Fig. 6, a plan of same looking at the top.

To the bed 1 of the machine is lixed by any suitable means four vertical brackets or standards (marked, respectively, 2, 3, 4, and 5) for purposes to be hereinafter described. These,

the bed and vertical standards, together with the oscillating band-knife frame 6, (which is fulcrumed to one of the said standards, as hereinafter described,) constitute the main portions of the fran'iework of the machine. In the standards 4. and are formed bearings for the two horizontal shafts 7 and 8, arranged above each other, as shown, and geared together by, say, the s mr-gcarings 9, 10, l. l and 12. Spur-wheels 9 and 12 are mounted upon the shafts 8 and 7, while the intermediate wheels and '11, are mounted upon the studs 13 and let, lixed to bracket 4:. On end of shaft 7 (outside of the spur-gearing) is mounted and lixed a worm-wheel 15, adapted to gear with a worm 16, fixed on the driving-shaft 17, rotating in bearings formed in the standard 2. ()n the driving-shaft 17 is a loose pulley 1%),

to which motion is imparted, say, through belting from any suitable source of power.

On the shaft 8 is mounted a sleeve 25, which forms a bearing for the said shaft, as well as to form the fulcrum of a bell-crank lever 20. The said sleeve is mounted in the top of the standard 5 and secured therein by the clasp or set-screw 26. The horizontal arm or branch of the bell-crank lever 20 is arranged to carry the shaft or spindle 21, on which the feed wheel or roller 22 (having a rough or serrated periphery) is mounted and fixed. At or about the opposite end of the feed-wheel shaft 21 is aspurwheel 23, arranged to gear with a spur wheel 24: on the shaft 8. At the upper end of one of the vertical stamlards are mounted the adj Listing-screws 27 and 28, which are respectively employed for lifting and adjusting the feed-roller 22 to the varying thicknesses of material operated upon and for regulating the pressure of spring 29, which is made to act upon the feed-roller.

The work-supporting wheel or roller 29 (which'is larger in diameter than the feedroller 22 and which may have a plain or roughened periphery) is mounted upon an axle or short shaft 30, which rotates in axial bearings formed in the outer portion of a doubleended lever 31, which is jointed to or mounted upon the shaft 7 between the main portion oi is made to engage with the said arm 32. Motion is imparted to the axle 30 from shaft 7 by spur-wheels 35 and 34, fixed thereon.

The band knife frame 6 is fulcrumed or pivoted to the standard 3, which is fixed to the bed-plate 1 at a suitable distance from and to the rear of the Work-supporting roller 29 and level with or slightly above its periphery. The said frame is arranged to work over and at any suitable anglesuch' as, say, for example, at a right angle to the feed-roller 22 and work-supporting roller 29 according to the material operated upon. The frame is provided at its back with a projecting arm 36, by which it is mounted on the pin 37, fixed to the standard 3, or the standard, if required, may be pivoted on the bed of the machine and locked in position by any suitable means. The pin 37 forms the pivot or fulcrum on which the frame is made to oscillate whenever it is required to adjust or vary the angle of the band-knife, while the standard itself by being pivoted on the bed of the machine allows the band-knife frame to be set obliquely or at a right angle to the feed-roller. In the frame 6 is a slot-hole 38, through which a pin 39, fixed to the upper portion of standard 3, is made to pass and work. The pin has a screwthread cut on its outer end (which projects beyond the frame)to receive a nut 40, employed for locking the frame in the desired position and angle. From the under side of the said frame is a depending arm 41, having a slothole 42 formed therein. Through this slothole is made to pass a pin or stud 42, fixed to a projecting arm 43, attached to or forming part of the standard 3. The pin 42 is armed at its outer end with a nut 44 for securing the depending arm 41 in the desired position. On the outer periphery of the said depending arm is formed or cut a number of very fine wormteeth 45, with which the worm formed on the periphery of a small wheel or nut 46 (carried by the arm 43) is made to mesh for readily adjusting the frame 6 to the desired angle.

In the frame 6 is provided a fixed bearing 47 for a shaft 48, on which is mounted at its inner end the band-knife pulley 49 and on the outer end one or more cord pulleys--say cord-pulley 50. Formed in or on or fixed, as shown, to the frame 6 at a distance from the shaft 48 are horizontal guides 51 for receiving a slide-block 51, Which is capable of adjustment to or from the shaft 48 by, say, a screw 52, provided with, say, a lock-nut 53. From the side of the slide-block a stud or 'spindle 54 projects outward and horizontally to form an axle for a second band-knife pulley 55, which is mounted on a sleeve 55 thereon. The axle 54 and slide-block 51 are secured in position by lock-nut 53 after adjustment by screw 52. Over the peripheries of the pulleys 49 and 55 (which are of the ordinary construction for this class of work) the endless band-knife 56 is placed. The bandknife is of ordinary construction, and it is kept taut by means of the screw 52, lock-nut 53, and slide-block 51. The band-knife is mounted upon its pulleys with its cutting edge extending longitudinally to the frame 6 and at or about a right angle to the feed, as well as at an angle to the article operated upon. The front of frame 6 may be closed with a suitable cover to protect the said knife and other working parts from dust.

The band-knife 56 is kept up to this work by a roller or rollers 71, (mounted on a stud or studs 72, fixed to the adjustable bracket 73, retained in position by set-screws 74 and adjusted horizontally by set-screws 7 5,) adapted to work against the back of the knife.

To the frame 6 is attached between the pulleys 49 and 55 an emery-wheel or grinder 57, which is mounted upon a spindle carried in adjustable or other bearings 58. On the spindle is mounted and fixed a cord-pulley 59,

l to which the driving cord of belt 68 is directed by guide-pulleys 61 and 62, mounted upon the arm 63, attached to the back of the frame 6. The emery-wheel 5 is made to act upon the band-knife 56 as occasion requires.

64 and 65 are respectively fast and loose cord-pulleys mounted upon the driving-shaft 17. On the shaft 37 are mounted two cordpulleys, each with two grooves, these two grooves being marked, respectively, 66, 67, 68, and 69.

The driving cord or belt 60 is made to pass from pulley 64 to and around groove 66 of the double pulley 66 67 and back to pulley 64. A second driving cord or belt connects pulleys 67 and 50 for imparting motion to the pulleys 49 and 55, over which the endless band-kni'fe 56 works. A third driving cord or belt 68 passes from large pulley 68 to and around guide-pulley 61, emery-wheel pulley 59, guide-pulley 62, and back to pulley 68 for imparting motion to the emery-wheel. A fourth driving cord or belt 69 connects driving-pulley 65 with the smaller groove of thedouble pulley 68 69.

For imparting an intermittent rotary motion to the driving-shaft 17 and emery-wheel 57, to the bed 1 is fixed a bracket 2, to which is fulcrumed a bell-crank lever 77, provided with, as shown in the drawings at Figs. 4 and 5, a set-screw 78. armed with a lock-nut 79. The end of the set-screw 78 is made to work against a hardened-steel spherical projection 80, formed on or fixed to the boss 81 of a coned friction-disk 82, mounted so as to slide freely on splined end of driving-shaft 17. The

tion to said shaft. A spring 86, mounted. on the driving-shaft 17, but interposed bctween the driving-pulley 19 and friction-disk 82, is employed for returning the latter to its normal position. To the face of the worm wheel 15 is fixed by any suitable means a rc movable or detachable segmental cam 88, which varies in size and shape according to the number of times that the emery-wheel is required to be automatically and intermittently brought in contact with the band-knife for sharpening purposes during the complete traverse 0r revolution of the band-knife. 'lhe cord-pulley 65, which is mounted loosely upon the driving-shaft 17, and in the boss of the said pulley a circumferential groove 89 is cut or formed in which the bifurcated end of a lever 90, armed with a runner or runners 91, engages. The said lever 90 is shaped somewhat like the letter U, but with ends or arms of different lengths fulcrumed or mounted on a pin 92, fixed to bracket 2. The opposite end of the said lever 90 is armed with, say, a ball .or other runner 93 for throwing the cord-pulley 65 into frictional contact with the fixed disk 94 whenever the segmental cam 88 comes in contact with the said ball-runner 93 for the purpose of actuating the emery-wheel. Springs 95 and 96 are respectively employed for returning the cord-pulley to its normal position and for connecting levers 98 and 77 together. A similar removable or detachable segmental cam 7 9, which varies in size and shape according to the period or distance that the work-supporting roller may be required to revolve, is mounted alongside the aforesaid detachable cam 88 on the said wormavheel shaft 7 and acts upon the outer end of lever 98, armed with a runner 98, which in turn depresses the bell-crank lever 77, acting upon the primary driving-pulley 19, the function of this detachable cam being to stop the entire machine at a half-revolution or other predetermined point in its revolution.

A friction-washer 9 L, composed, say, of paper or other suitable material, may be mounted in a recess formed in the said cordpulley 65.

By the baml-knifc being made to travel as herein described a new or different cutting edge is constantly being presented for removing the surplus leather, and thereby saving the constant stoppage of the machine for sharpening purposes.

What 1 claim as my invention, and desire to secure by Letters Patent, is--- 1. In a skiving-machine, the combination of a worksu1)porting roller mounted upon an axle, an adjustable double end ed lever forming a bearing for said axle, a horizontal shaft on which the said lever is mounted and fulcrumed, two standards provided with bearings for said shaft fixed to a bed-plate, gearing connecting the said axle and shaft together, a second horizontal shaft parallel to the first-named shaft mounted in hearings in said two standards, gearing for connecting the two shafts together, with a drivirig-shaft supported by a standard fixed to said framework, a feed-roller mounted upon a bell-crank lever, said bell-c 'ank lever being adjustably mounted by a sleeve to one of said standards, screws and springs for adjusting said lever, and gearing for connecting the said feed-roller to the second-named horizontal shaft, as set forth.

2. In a skiving-machine the combination of an emery-wheel mounted on a spindle carried in bearings, the tilting frame to which bearings are fixed, a cord-pulley mounted upon said spindle, guide-pulleys mounted upon an arm fixed to said tilting frame, a drivingshaft with a cord-pulley mounted thereon, the means described for imparting a rotary motion to the driving-shaft a standard for carrying said driving-shaft, fixed to a bed-plate, and a driving-cord, as set forth.

3. In a skivingmachine, the combination of a bed-plate, having a standard mounted there on, a tilting frame fulcrumed to said standard, said frame having a slotted dependent arm upon its bottom edge, and a slot-hole in its main portion, two band knife pulleys mounted in said frame capable of adjustment to or from each other, an endless band-knife working over the peripheries of said pulleys, a work-supporting roller mounted upon an axle, an adjustable double-ended lever forming a bearing for said axle, a horizontal shaft on which the said lever is mounted and ful crumed, two standards provided with bearings for said shaft fixed to a bed-plate, gearing connecting the said axle and shaft together, a second horizontal shaft parallel to the lirst-named shaft mounted in bearings in said two standards, gearing for connecting the two shafts together, with a driving-shaft supported by a standard fixed to said framework, a feed-roller mounted upon a bell-crank lever, said bell-crank lever being adjustably mounted by a sleeve to one of said standards, screws and springs for adjusting said lever, gearing for com'iecting the said feed-roller to the secoml-rmmml horizontal shaft, the frame 6 fulcrumed by arm 36 to standard 3, bedplate 1 to which said standard is fixed, slotted arm 41 depending from the under side of said frame, worm-teeth 45 formed on the depending arm, worm 1,6 engaging with said wormteeth, arm 13 attached to said standard for carrying the Worm, pins 42 and 39 and nuts M and 40, said pins passing respectively through the slot-holes 12 and 38, an emerywheel mounted on a spindle carried in bearings, the tilting frame to which bearings are fixed, a cord-pulley mounted upon said spindle, guide-pulleys mounted upon an arm fixed to said tilting frame, a driving-slmft with a cord-pulley mounted thereon, a standard for In testimony WhereofIhave signed my name carrying said driving-shaft fixed to said bedto this specification in the presence of two subplate, a driving-cord, and cord-pulleys as describing Witnesses.

scribed for imparting motion to the said band- CHARLES HORATIO KEATS. 5 knife, and the means described for imparting itnesses:

an intermittent rotary motion to the driving- ALBERT NEWEY,

shaft, as set forth. THos. DAVIS. 

